{"action":"opened","issue":{"url":"https://api.github.com/repos/AnalyticalGraphicsInc/cesium/issues/5534","repository_url":"https://api.github.com/repos/AnalyticalGraphicsInc/cesium","labels_url":"https://api.github.com/repos/AnalyticalGraphicsInc/cesium/issues/5534/labels{/name}","comments_url":"https://api.github.com/repos/AnalyticalGraphicsInc/cesium/issues/5534/comments","events_url":"https://api.github.com/repos/AnalyticalGraphicsInc/cesium/issues/5534/events","html_url":"https://github.com/AnalyticalGraphicsInc/cesium/issues/5534","id":238523976,"number":5534,"title":"CallbackPositionProperty","user":{"login":"nsorin","id":16210592,"avatar_url":"https://avatars2.githubusercontent.com/u/16210592?v=3","gravatar_id":"","url":"https://api.github.com/users/nsorin","html_url":"https://github.com/nsorin","followers_url":"https://api.github.com/users/nsorin/followers","following_url":"https://api.github.com/users/nsorin/following{/other_user}","gists_url":"https://api.github.com/users/nsorin/gists{/gist_id}","starred_url":"https://api.github.com/users/nsorin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nsorin/subscriptions","organizations_url":"https://api.github.com/users/nsorin/orgs","repos_url":"https://api.github.com/users/nsorin/repos","events_url":"https://api.github.com/users/nsorin/events{/privacy}","received_events_url":"https://api.github.com/users/nsorin/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-06-26T12:14:04Z","updated_at":"2017-06-26T12:14:04Z","closed_at":null,"body":"As mentionned in #2597 :\r\n\r\nA CallbackPositionProperty with a referenceFrame would be a useful addition to cesium, not sure why it doesn't exist already. Since the position of an entity can be defined by a callback, it seems logical to have the possibility to combine the advantages of both classes.\r\n\r\nI am using a polyline with a PolylineDashMaterialProperty as material to link 2 entities whose position is determined by a non constant CallbackProperty. To reference the 2 entities' positions in the polyline, I have to use a PropertyArray instead of a PositionPropertyArray (because the latter needs a referenceFrame, which does not exist in a standard CallbackProperty).\r\nThis somehow causes the dashes of the polyline to stretch in a strange way at some angles. This did not happen when I didn't need the callback and simply used a PositionPropertyArray.\r\n\r\nAny chance this feature can be implemented in a future version ?"}}
{"actor":{"display_login":"nsorin"}}